French Onion Soup - cooking recipe

Ingredients

1/4 c. butter
1 qt. boiling water
3 beef bouillon cubes and 3 chicken bouillon cubes or 3 cans beef broth and 2 cans chicken broth
1 c. white wine (Sauterne; may substitute other preferred wine)
6 slices French bread, toasted
6 slices Mozzarella cheese
1/2 c. grated Parmesan cheese
6 medium size onions, thinly sliced

Preparation

Melt butter in a large soup pot; add onions and cook about 10 minutes.
Add boiling water in which cubes have been dissolved; cover and cook over low heat until onions are tender, 15 minutes to 1/2 hour.
Add dry white wine.
Pour soup into 6 earthenware soup dishes; place toast on top.
Sprinkle with Parmesan cheese. Cover with Mozzarella cheese slices.
Bake in moderately hot oven (425\u00b0) until cheese melts.